Portable drill press device



w. E. JoHNsoN 2,925,001

PORTABLE DRILL PREss DEVICE Filed Feb. 10, 1958 Feb, 16, 1960 III I f immuni mlllll Illllllllllllllll "Il I,

pln mrllllllllllllllllllil v HAYE .rof/fvgon/ @7W/m fm A TTRNE YS PORTABLE DRILL PRESS DEVICE Wray E. Johnson, Mason, Ohio Application February 10, 1958, Serial No. 714,313

4 Claims. (Cl. 77-7) This invention relates to a drill press device and in particular to a simple and inexpensive device adapted for converting a hand drill into a drill press of a portable nature.

In construction and fabrication work it is often necessary to drill holes in locations that do not admit of the use of a conventional drill press while at the same time these holes might be of such a nature as to require considerable effort to accomplish the drilling thereof.

With this in mind it is a particular object of the present inveniton to provide a device adapted for being associated with a hand drill which will convert the hand drill to a drill press arrangement whereby power drilling operations can be carried out.

Another object of this invention is the provision of an t arrangement for converting a hand drill to a portable drill press that can be utilized in substantially any situation for drilling operations.

Arstill further object of this invention is the provision of a conversion kit that can be utilized with substantially any hand drill to convert the hand drill to a drill press.

Another object of this invention is the provision of a kit for converting a hand drill to a drill press which will utilize standard pipe as the principal frame member of the drill press.

These and other objects and advantages will become more apparent upon reference to the drawings in which:

Figure l is a perspective view partly broken away showing a conversion kit according to the present invenl .tion mounted on a length of pipe;

Figure 2 is a perspective view showing one of the lio-ating or tiltable arrangements forming a support foot either for the drill press or for the work being operated;

Figure 3 is a sectional view showing the manner in which the device of the present invention is clamped about the neck of a hand drill immediately behind the chuck thereof so that the drilling thrusts are all carried at the chuck end of the drill;

Figure 4 is a diagrammatic view showing a work member being drilled with the work member being supported on the floating foot which is on the side of the workpiece opposite the drill;

Figure 5 is a diagrammatic view showing another manner of using the drill; and

Figure 6 is a diagrammatically illustrated modification wherein straight line motion of the drill is had.V

Referring to the drawings somewhat more in detail, the arrangement of the present invention comprises generally, a frame part adapted for being adjustably clamped to a rigid frame member such as a pipe or the like and having a drill support movably mounted thereon. Also attached to the pipe in an adjustable manner are substantially rigid brackets each having a tiltable or oating foot or support element thereon.

In Figure 1 the pipe referred to is indicated at 10 and at each end there is mounted thereon the substantially rigid support arms 12 which preferably terminate in split collar elements 14 that can be clamped tightly about the United States Patent i 2,925,001 Patented Feb. 1e, 195o pipe by the clamping screws 16. Each support arm 12 is provided with a stud 18 and oatingly mounted on the outer end of each stud 18 is a three-pronged cup element 20 forming a floating foot or anchor against which the work being drilled is supported or which provides support for the drill press during a drilling operation. The oating connection of the cup 20 with stud 18 may be accomplished by the shoulder screw and washer indicated at 22 in Figure 2.

Since only one of the support arms 12 will be ernployed at any one time there could be provided only one thereof if desired and this support member mounted on whichever end of pipe 10 it would find its best use.

Also mounted on pipe 10 in spaced relation with arms 12 is another bracket or frame part 24 comprising the split collar portion 26 fitting over the pipe and adapted for being clamped thereto by clamp screw means 28. Attached to the top of split collar portion 26 as by welding or the like is arcuate plate like part 30 which is provided with pivot means as at 32 and 34. Pivot means 32 is availed of for pivotally supporting the forked handle member 36 which extends upwardly beyond the pivot means 32 to be pivotally connected at 38 to split collar 40 having a clamp screw 42. Split collar 40 is adapted for engaging about the neck of a hand drill immediately beyond the chuck as is illustrated in Figure 3 wherein the said neck of the drill is represented at 44.

Split collar 40 comprises at least one lwing part 46 extending backwardly therefrom and pivot means 48 are provided therein toward the rear end so that a link 50 can be connected between pivot means 48 pertaining to, split collar 40 and pivot means 34 pertaining to plate like member 30. This arrangement provides for supporting the split collar 40 so that its axis, and, therefore, the axis of the drill clamped therein will remain substantially parallel with the pipe 10 in all adjusted positions of the drill. A

A link 52 may be provided extending between pivot means 32 and pivot means 34 if so desired. The split collar 40 may be provided with a single wing 46 as illustrated in Figure l or there may be a wing on each side of the split collar if so desired.

One manner of operating the drill is illustrated in Figure 4. In this gure a work member 60 is mounted Aagainst floating foot 20 and the drill 62 mounted in chuck 64 of the drill 66 that is clamped in split collar 40 for being pressed into the work on the side opposite foot 20 by movement of handle 36 toward the right. The oating foot permits the workpiece to be lirmly engaged even though somewhat irregular in shape. Also should it be necessary for the work 60 to adjust itself during drilling operation, the floating foot 20 will permit this to be accomplished.

In Figure 5 there is illustrated anl arrangement wherein the work member 68 is of such a nature that the support arm cannot be located on the side thereof opposite the drill and for carrying out a power drilling operation. In this case the support arm 12 at the opposite en d of pipe 10 is availed of with the floating foot 20 thereof engaging the wall of stationary abutment 70. The same thrust can be developed on the drill when drilling as shown in Figure 5 as can be developed thereon when drilling as shown in Figure 4 and likewise all drilling thrusts are imposed on the drill frame at the chuck end thereof.

Figure 6 shows a manner in which absolute straight line movement of the drill can be had where this is necessary. This might be a case when drilling deep holes in metal and in which case no lateral movement of the drill could be permitted. In Figure 6 the drill support or collar is provided with wing portions 82 that rest on the arcuate members 84 that are pivoted at 86 to the frame part 88 that is adjustably mounted on the bar or rod or `other elongated vsupport such as pipe 90. A link 92 connects the arcuate members 84 for simultaneous swinging movement and hand lever 94 is provided for actuating the arcuate elements. The wing portions 82 are drivingly connected with the arcuate elements asby ythe steel drive ribbon 96 attached at 98 to the wing portions and extending in opposite directions therefrom and about the arcuate elements attached thereto as at 100. There would preferably be a set of arcuate elements 84 on each side of collar 80 and in this manner the collar would be supported for movement in a direction exactly parallel with the axis of the elongated support 90.

From the foregoing it will be evident that `the present invention provides for an inexpensive drill press and for a kit for converting a hand drill to a drill press with the drill press being characterized in being widely adaptable to various drilling situations.

It will be understood that this invention is susceptible to modification in order to adapt it to different usages and conditions; and, accordingly, it is desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.

I claim:

1. In a device for use with a hand drill; a frame part comprising a split portion adapted for freely adjustable detachable connection with a pipe or a like cylindrical elongated support member, a split clamping collar adjacent the frame part adapted for being detachably clamped about the neck of a hand drill adjacent the chuck end thereof, link means movably connected to the split collar and frame part supporting said split collar on said frame part for movement relative thereto in a direction substantially parallel with the axis of a support member clamped in said split portion while simultaneously supporting the split collar so that the axis of the drill remains parallel with the support member, said link means comprising a plurality of parallel links arranged on both sides of the frame part and split collar, a hand lever pivoted between the frame part and the split collar for actuating the split collar, and a load supporting foot adapted for being adjustably mounted on said support member for sustaining the drilling thrusts imparted to the hand drill by the hand lever, said load supporting foot comprising an arm of a length to extend across the axis of the drill when the supporting -foot is mounted on the support member, and a foot member floatingly carried by said arm 'substantially on the axis of said drill.

2. In a device for use with a hand drill; a frame part comprising a split portion adapted for freely adjustable detachable connection Vwith a pipe or a like elongated cylindrical support member, a split clamping collar adjacent the frame part adapted for being detachably clamped about the neck of a hand drill adjacent the chuck end thereof, link means connecting said split collar with said frame part for movement of the split collor relative thereto in a direction substantially parallel with the axis of a support member clamped in said split portion while simultaneously supporting the split collar so that the axis of the drill remains parallel with the support member, a hand lever attached to one of said link means for actuating the split collar, and a load supporting foot adapted for being adjustably mountedV on said support member for sustaining the drilling thrusts imparted to the hand drill by the hand lever, sadload supporting foot comprising an arm extending across the axis of 'the drill when the supporting foot is mounted on the support member, and a foot member swivelly carried by said arm substantially on the axis of said drill, said arm being adapted for being positioned on the support member on either side'of the drill whereby the floating foot can engage the workpiece opposite the drill or can engage an abutment on the side 'ofthe drill oppositev the work.

3. In a device for use with a hand drill; a frame part having a split portion adapted for freely adjustable detachable connectionwith an elongated cylindrical support member such as a pipe, a split clamping collar adjacent the frame part adapted for detachable supporting connection with the neck of a hand drill immediately behind the chuck of the drill, spaced parallel links pivotally connecting both sides of the said collar with both sides of the frame part for supporting the collar in a fixed oriented position relative to the frame part while permitting lmovement of the split collar in the direction of the length of the supporting member, at least one of said links being elongated to form a hand lever for actuating the said collar, at least one support arm adapted for adjustable detachable connection with the said support member and adapted for extending over the axis of a hand drill clamped in said split collar, a stud on the support arm substantially on the axis of the hand drill, and a foot element swivelly mounted on the end of the stud for engagement with a workpiece being drilled on the side thereof opposite the drill or for engagement with a stationary abutment on the side of the hand drill opposite the work.

4. In combination; a pipe, a frame part comprising a split portion embracing the pipe and clamped thereabout, a split collar adjacent the frame part and having wing means extending therefrom parallel with the pipe, parallel links pivoted between opposite ends of the wing means and the frame partsupportingthe collar for movement on the frame part substantially parallel with the axis of the pipe, said split collar being adapted for being clamped about the neck ofa hand drill immediately behind the chuck thereof, a pair of said links in the tranverse plane of said split collar being extended to beyond the said split portion and joined together to form a hand lever for movement of the collar, at least one support arm having a split portion embracing the' pipe and adjustably clamped thereto and thel support arm projecting over the axis of a drill mounted in thev split collar, a stud in the support arm in substantial alignment with the axis of the drill, and a iultiple-pronged convex foot-element oatingly mounted on the end of the stud for supporting engagement with the work being drilled or with an abutment on the opposite side of the hand drill from the work.

References Cited in the tile of this patent UNITED STATES PATENTS 1,869,514 Seitz Aug. 2, 1932 1,887,554 Hitchcock Nov. 15, 1932 2,234,789 Wunderlich Mar. 1l, 1941 2,468,358 Clark Apr. 26, 1949 2,642,761 Goldberg June 23, 1953 2,709,380 Reynolds May 31, 1955 

